Operation Paravane
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Operation Paravane was a British air raid of
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...
that inflicted heavy damage on the German battleship ''Tirpitz'', at anchor in Kaafjord in the far north of German-occupied Norway. The attack was conducted on 15 September 1944 by 21
Royal Air Force The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) an ...
heavy bomber Heavy bombers are bomber aircraft capable of delivering the largest payload of air-to-ground weaponry (usually bombs) and longest range (takeoff to landing) of their era. Archetypal heavy bombers have therefore usually been among the larges ...
s, which flew from an airfield in the north of the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...
. The battleship was struck by one bomb, and further damaged by several near misses. This damage rendered ''Tirpitz'' unfit for combat, and she could not be repaired as it was no longer possible for the Germans to sail her to a major port. The attack on 15 September followed a series of largely unsuccessful raids conducted against ''Tirpitz'' by
Royal Navy The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against ...
aircraft carriers between April and August 1944, that sought to sink or disable the battleship at her anchorage, so that she no longer posed a threat to Allied convoys travelling to and from the Soviet Union. The first of these raids was successful, but the other attacks failed due to shortcomings with the
Fleet Air Arm The Fleet Air Arm (FAA) is one of the five fighting arms of the Royal Navy and is responsible for the delivery of naval air power both from land and at sea. The Fleet Air Arm operates the F-35 Lightning II for maritime strike, the AW159 Wil ...
's strike aircraft and the formidable German defences. As a result, the task of attacking the battleship was transferred to the RAF's
Bomber Command Bomber Command is an organisational military unit, generally subordinate to the air force of a country. The best known were in Britain and the United States. A Bomber Command is generally used for strategic bombing (although at times, e.g. during t ...
. Avro Lancaster bombers from the Command's two elite squadrons flew to their staging airfield in the Soviet Union on the night of 11/12 September, and attacked on 15 September using heavy bombs and air-dropped mines. All of the British aircraft returned to base, though one of the Lancasters later crashed during its flight back to the United Kingdom. Following Operation Paravane, the German Navy's commander decided to use ''Tirpitz'' as a static artillery battery to protect the town of
Tromsø Tromsø (, , ; se, Romsa ; fkv, Tromssa; sv, Tromsö) is a municipality in Troms og Finnmark county, Norway. The administrative centre of the municipality is the city of Tromsø. Tromsø lies in Northern Norway. The municipality is the ...
. The Allies were unable to confirm the extent of the battleship's damage, and conducted two more heavy bomber raids against her in late 1944, Operation Obviate on 29 October, and
Operation Catechism Operation Catechism was a British air raid of World War II that destroyed the German battleship ''Tirpitz''. It was conducted on 12 November 1944 by 29 Royal Air Force heavy bombers that attacked the battleship at its anchorage near the Norwegia ...
on 12 November. ''Tirpitz'' was sunk with considerable loss of life during the second of these attacks.


Background

From early 1942, ''Tirpitz'' posed a significant threat to the Allied convoys transporting supplies through the
Norwegian Sea The Norwegian Sea ( no, Norskehavet; is, Noregshaf; fo, Norskahavið) is a marginal sea, grouped with either the Atlantic Ocean or the Arctic Ocean, northwest of Norway between the North Sea and the Greenland Sea, adjoining the Barents Sea to ...
to the Soviet Union. Stationed in
fjord In physical geography, a fjord or fiord () is a long, narrow inlet with steep sides or cliffs, created by a glacier. Fjords exist on the coasts of Alaska, Antarctica, British Columbia, Chile, Denmark, Förden and East Jutland Fjorde, Germany, ...
s on the Norwegian coast, the battleship was capable of overwhelming the close-escort forces of Arctic convoys or breaking out into the North Atlantic. Owing to the superiority of the Allied navies, ''Tirpitz'' rarely put to sea and only conducted three brief combat operations into the Norwegian Sea during her career. The Allies needed to keep a powerful force of warships with the British Home Fleet to counter the threat she posed and
capital ship The capital ships of a navy are its most important warships; they are generally the larger ships when compared to other warships in their respective fleet. A capital ship is generally a leading or a primary ship in a naval fleet. Strategic im ...
s accompanied most convoys part of the way to the Soviet Union.
Royal Air Force The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) an ...
(RAF) heavy bombers conducted a series of abortive raids on ''Tirpitz'' shortly after the battleship arrived in Norway from Germany in January 1942. ''Tirpitz'' was initially based at Fættenfjord near
Trondheim Trondheim ( , , ; sma, Tråante), historically Kaupangen, Nidaros and Trondhjem (), is a city and municipality in Trøndelag county, Norway. As of 2020, it had a population of 205,332, was the third most populous municipality in Norway, and ...
, which lay within range of British bombers flying from Scotland. The first raid on 30 January involved nine
Handley Page Halifax The Handley Page Halifax is a British Royal Air Force (RAF) four-engined heavy bomber of the Second World War. It was developed by Handley Page to the same specification as the contemporary twin-engine Avro Manchester. The Halifax has its orig ...
and seven Short Stirling bombers. Owing to cloud over the target area, only one of the bombers sighted ''Tirpitz'' and none inflicted damage. One Halifax crashed into the sea on its way back to Scotland and its crew were rescued. The next raid on Fættenfjord took place on 30 March, with the attacking force comprising 33 Halifaxes. The operation was again frustrated by heavy clouds over the target area. Four of the Halifaxes were shot down and two others crashed while returning to base. Another attack was mounted by 30 Halifaxes and 11 Avro Lancasters on the night of 27/28 April. Aircraft of the first wave located and attacked ''Tirpitz'' but no damage was inflicted and five bombers were lost. The final raid in this series took place the next night and involved 21 Halifaxes and 12 Lancasters. The attackers found ''Tirpitz'' covered in a protective smokescreen and the battleship again escaped damage; two British aircraft were destroyed. Plans for further heavy bomber attacks on ''Tirpitz'' were developed throughout 1942, none took place. One of the options considered was to stage the bombers through a base in the northern Soviet Union but this was judged impractical as little was known about the suitability of Soviet airfields for heavy bombers. Two squadrons of
RAF Coastal Command RAF Coastal Command was a formation within the Royal Air Force (RAF). It was founded in 1936, when the RAF was restructured into Fighter, Bomber and Coastal Commands and played an important role during the Second World War. Maritime Aviation ...
Handley Page Hampden The Handley Page HP.52 Hampden is a British twin-engine medium bomber that was operated by the Royal Air Force (RAF). It was part of the trio of large twin-engine bombers procured for the RAF, joining the Armstrong Whitworth Whitley and Vickers ...
torpedo bombers operated from Vaenga in northern Russia during mid-September 1942 to counter ''Tirpitz'' or any other German warships which attempted to attack Allied convoys but these aircraft did not make contact with the ship. Further plans for air attacks on ''Tirpitz'' were developed during 1943 but none took place. During 1942 and 1943 British inventor Barnes Wallis tried to develop a version of his "
bouncing bomb A bouncing bomb is a bomb designed to bounce to a target across water in a calculated manner to avoid obstacles such as torpedo nets, and to allow both the bomb's speed on arrival at the target and the timing of its detonation to be pre-deter ...
" for use against ''Tirpitz'' alongside the larger weapons that were used to attack several German dams during
Operation Chastise Operation Chastise or commonly known as the Dambusters Raid was an attack on Nazi Germany, German dams carried out on the night of 16/17 May 1943 by No. 617 Squadron RAF, 617 Squadron RAF Bomber Command, later called the Dam Busters, using sp ...
on 16/17 May 1943. No. 618 Squadron was formed in April 1943 and equipped with de Havilland Mosquitos for this attack but trials of the "Highball" bouncing bombs during the year were unsuccessful and the plan was abandoned in September. ''Tirpitz'' was transferred to a new base at Kaafjord in the far north of Norway in late May 1943. This anchorage was well protected, with the defences including equipment capable of rapidly generating an artificial smokescreen as well as many anti-aircraft guns located in shore batteries and warships. During June 1943, consideration was given to attacking the battleship with
United States Army Air Forces The United States Army Air Forces (USAAF or AAF) was the major land-based aerial warfare service component of the United States Army and ''de facto'' aerial warfare service branch of the United States during and immediately after World War II ...
Boeing B-17 Flying Fortress heavy bombers. These aircraft would have flown from the United Kingdom to Kaafjord, landed in the Soviet Union and made another attack against ''Tirpitz'' on their return flight. Such a mission was judged to be impractical by the RAF as it was expected that German fighter aircraft would attack the bombers and Kaafjord would be covered by a smokescreen by the time they arrived over the target area. The only attack made against ''Tirpitz'' at Kaafjord by land-based aircraft prior to September 1944 was a small raid conducted by 15 Soviet bombers on the night of 10/11 February 1944, but it did not inflict any damage on the battleship. The Royal Navy attacked ''Tirpitz'' at Kaafjord from September 1943 until August 1944. On 23 September 1943, the crews of two British midget submarines penetrated the defences around the battleship during
Operation Source Operation Source was a series of attacks to neutralise the heavy German warships – ''Tirpitz'', ''Scharnhorst'' and ''Lützow'' – based in northern Norway, using X-class midget submarines. The attacks took place in September 1943 at Kaa ...
, and placed explosive charges in the water beneath her. This attack caused extensive damage to ''Tirpitz'', putting her out of service for six months. Further midget submarine attacks were not considered feasible and an air raid designated
Operation Tungsten Operation Tungsten was a Second World War Royal Navy air raid that targeted the German battleship ''Tirpitz''. The operation sought to damage or destroy ''Tirpitz'' at her base in Kaafjord in the far north of Norway before she could become ...
was conducted by Royal Navy aircraft carriers on 3 April 1944 as repairs to the battleship neared completion. ''Tirpitz'' did not suffer heavy damage in this operation but was out of action for several more months while repairs were completed. The Home Fleet sortied to attack Kaafjord on a further four occasions between April and July; all but the last of these operations were frustrated by bad weather and the Operation Mascot raid on 17 July did not inflict any damage on ''Tirpitz''. Four more carrier attacks targeting ''Tirpitz'' were undertaken between 22 and 29 August during
Operation Goodwood Operation Goodwood was a British offensive during the Second World War, which took place between 18 and 20 July 1944 as part of the larger battle for Caen in Normandy, France. The objective of the operation was a limited attack to the south, ...
but again resulted in only minor damage to the battleship.


Planning

Senior Royal Navy officers attributed the failure of the raids conducted between April and August 1944 to shortcomings with the Fleet Air Arm's main attack aircraft, the
Fairey Barracuda The Fairey Barracuda was a British carrier-borne torpedo and dive bomber designed by Fairey Aviation. It was the first aircraft of this type operated by the Royal Navy's Fleet Air Arm (FAA) to be fabricated entirely from metal. The Barracuda ...
. Although Operation Tungsten succeeded because the Germans were taken by surprise, during subsequent raids the slow speed of the Barracudas gave Kaafjord's defenders time to cover the area with artificial smoke before the British aircraft arrived over the target area. Moreover, the Barracudas were unable to carry bombs large enough to significantly damage ''Tirpitz'' when hits were achieved. As a result, before and after Operation Goodwood, further consideration was given to using Mosquitos to attack the battleship; under initial plans developed in mid-August these aircraft would have been launched from aircraft carriers and attacked ''Tirpitz'' with or armour-piercing bombs before landing in northern Russia. These proposals came to nothing as the Supreme Allied Commander of the Allied Expeditionary Force, General
Dwight D. Eisenhower Dwight David "Ike" Eisenhower (born David Dwight Eisenhower; ; October 14, 1890 – March 28, 1969) was an American military officer and statesman who served as the 34th president of the United States from 1953 to 1961. During World War II, ...
, was unwilling to release any Mosquitos in July, and in August the Mosquitos were also judged to be too slow to successfully reach Kaafjord from aircraft carriers before it was covered by smoke. In August RAF Bomber Command, which controlled the force's heavy bombers, began developing plans to strike ''Tirpitz'' at Kaafjord. During a meeting on 28 August between the head of Bomber Command, Air Chief Marshal Sir Arthur Harris, and Vice-Chief of the Air Staff Air Marshal Douglas Evill, to discuss the feasibility of dispatching Mosquitos against Kaafjord, Harris stated that he had ready a plan to attack the battleship with Lancaster bombers. Under this plan, 24 Lancasters were to depart a base in the far north of Scotland, bomb ''Tirpitz'', and return to an airstrip in the Shetland Islands. If the return trip was judged impossible, the bombers would instead land at
Murmansk Murmansk (Russian: ''Мурманск'' lit. "Norwegian coast"; Finnish: ''Murmansk'', sometimes ''Muurmanski'', previously ''Muurmanni''; Norwegian: ''Norskekysten;'' Northern Sámi: ''Murmánska;'' Kildin Sámi: ''Мурман ланнҍ'') ...
in northern Russia before returning to the United Kingdom. Bomber Command's staff had contacted Soviet officials about the latter element of the plan, and concluded that it would be feasible. Owing to the complex nature of the mission, Bomber Command's two elite special duties units, No. 9 and No. 617 Squadrons, would conduct the attack. This proposal was viewed favourably, and was approved by Eisenhower's headquarters on 5 September. No. 5 Group was assigned responsibility for planning the attack on ''Tirpitz'' in late August. The group's staff officers judged that it was essential for the raid to surprise Kaafjord's defenders so that the battleship was not covered in smoke by the time the Lancasters arrived. As the seaward approaches to the fjord were covered by a comprehensive radar network, the planners decided that the attack force should approach the region overland from the south-east and at a high speed to limit the defenders' warning time to eight minutes or less. Due to the difficulty of damaging the heavily armoured battleship, the main weapon selected for this operation was the
Tallboy bomb Tallboy or Bomb, Medium Capacity, 12,000 lb was an earthquake bomb developed by the British aeronautical engineer Barnes Wallis and used by the Royal Air Force (RAF) during the Second World War."Medium capacity" refers to the ratio of bomb ...
, the largest then in service with the RAF and capable of penetrating well-protected targets. Some of the bombers were to be armed with "Johnnie Walker" (commonly called "JW") mines, which were designed to be dropped from aircraft and move through the water by rapidly diving and surfacing until they struck their target. The Tallboy had been successfully used by No. 617 Squadron against tunnels and other facilities, but the mines had not been used in combat, and Harris and several other senior RAF officers were sceptical of their effectiveness. As test flights conducted by No. 617 Squadron proved that it was not possible to make a return trip to Kaafjord from Scotland, and an evaluation of the main airstrip in Shetland determined that it was unsuitable for Lancasters, No. 5 Group's staff officers judged that it would be necessary for the aircraft to refuel in the Soviet Union. Detailed investigation of the airstrips near Murmansk found that they were at best marginal for heavy bombers and had almost no accommodation or aircraft servicing facilities. Moreover, the airstrips were vulnerable to attack from fighters operating from nearby German bases. Instead, it was decided that the attack force should fly over northern Sweden and Finland after raiding Kaafjord and refuel at
Yagodnik Yagodnik, Arkhangelsk Oblast, north west Russia, was the site of a World War II airfield. It is located near Arkhangelsk, on an island in the Northern Dvina river, 9 kilometres from the sea at Dvina Bay. Operation Paravane The airfield was used ...
airstrip, which was on an island near
Arkhangelsk Arkhangelsk (, ; rus, Арха́нгельск, p=ɐrˈxanɡʲɪlʲsk), also known in English as Archangel and Archangelsk, is a city and the administrative center of Arkhangelsk Oblast, Russia. It lies on both banks of the Northern Dvina near ...
. This plan was accepted by the
Air Ministry The Air Ministry was a department of the Government of the United Kingdom with the responsibility of managing the affairs of the Royal Air Force, that existed from 1918 to 1964. It was under the political authority of the Secretary of State ...
on 6 September.
Soviet Naval Aviation Soviet Naval Aviation (AV-MF, for ''Авиация военно-морского флота'' in Russian, or ''Aviatsiya voyenno-morskogo flota'', literally "aviation of the military maritime fleet") was the naval aviation arm of the Soviet Na ...
offered to attack German fighter bases at the same time as the British bombers arrived over the target area, but No. 5 Group rejected this proposal and requested that Soviet aircraft not fly near Kaafjord, to avoid alerting the Germans. Also in early September, five aircraft from No. 192 Squadron, which specialised in monitoring enemy radars, conducted sorties to locate German radar stations in northern Norway and identify any gaps in their coverage. The operation order setting out how the raid was to be conducted was issued by No. 5 Group on 7 September. It stated that Kaafjord was believed to be protected by 16 heavy and 16 light
anti-aircraft guns Anti-aircraft warfare, counter-air or air defence forces is the battlespace response to aerial warfare, defined by NATO as "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It includes surface based, ...
, as well as ''Tirpitz''s guns, and that it took the defenders ten minutes to cover the battleship with a smokescreen. The attack force was to be organised into two groups. Force A, comprising twelve Lancasters from No. 9 Squadron and an equal number from No. 617 Squadron armed with a single Tallboy each, was to continue to Yagodnik after bombing. Force B was to comprise six Lancasters from each of the squadrons armed with twelve JW mines and return directly to either Scotland or the Shetland Islands. A Lancaster from the RAF Film Unit, which was attached to No. 463 Squadron RAAF, would accompany Force B and also return to the United Kingdom after the bombers completed their attack. It was intended that the attack would be conducted in daylight, and that the Lancasters would assemble into formations near Kaafjord before attacking. If the fjord was covered by cloud or smoke, Force A was ordered to not drop its valuable bombs and continue onto Yagodnik. Force B was directed to drop the JW mines regardless of cloud or smoke cover as long as an aiming point could be identified. The entire attack group was to maintain strict
radio silence In telecommunications, radio silence or Emissions Control (EMCON) is a status in which all fixed or mobile radio stations in an area are asked to stop transmitting for safety or security reasons. The term "radio station" may include anything ca ...
. Two No. 511 Squadron Consolidated B-24 Liberator transport aircraft were assigned to carry maintenance personnel and supplies from the United Kingdom to Yagodnik, and a Mosquito fitted for photo reconnaissance tasks from No. 540 Squadron would scout ahead of the attack force. All aircrew were briefed on this plan on either 8 or 9 September. Group Captain C.C. McMullen, the commander of No. 9 Squadron's home base of
RAF Bardney Royal Air Force Bardney or RAF Bardney is a former Royal Air Force station located north of Bardney, Lincolnshire, England and east of the County town of Lincoln. It was built as a satellite to RAF Waddington in 1943 and the airfield closed i ...
, was appointed the overall leader of the detachment. No. 617 Squadron's commanding officer, Wing Commander "Willy" Tait, was selected to lead the strike force. To provide weather reports and damage assessments from Kaafjord, agents on the ground were needed, but the last radio group in the area had exfiltrated in May 1944. The first attempt at re-establishing a presence near ''Tirpitz'' occurred in August 1944, when a Norwegian Secret Intelligence Service (SIS) agent was dispatched to the nearby village of Alta. The agent infiltrated with a radio transmitter codenamed "Sinding" from neutral Sweden, but only managed to begin transmissions to the United Kingdom on 22 September, too late for the preparation stage for the operation. In a second attempt at establishing an agent group in the area, the Norwegian SIS agents
Knut Moe Knut Moe (1921–1989) was a Norwegian resistance member and a radio agent for the Special Intelligence Service, during World War II. World War II He was born in Hammerfest. When World War II reached Norway in 1940 with the invasion and occupatio ...
and Anton Arild were dropped by parachute into the wilderness between Kaafjord and Alta on 8 September by an American
Operation Carpetbagger Operation Carpetbagger was a World War II operation to provide aerial supply of weapons and other '' matériel'' to resistance fighters in France, Italy and the Low Countries by the U.S. Army Air Forces that began on 4 January 1944. History In ...
Liberator. During the drop the agents became separated from most of their equipment, with the exception of the radio transmitter. Without weapons and equipment, the agents were forced to relocate to the village of
Bossekop fi, Possukoppa , native_name = , nickname = , settlement_type = Part of town , image_skyline = Ipy-bossekop-fig1.jpg , image_caption = View of the village (1887-1888) , pushpin_map = Fi ...
, where Moe's mother lived. The radio transmitter operated by the SIS team, codenamed "Aslaug", was operational by 13 September, sending weather reports to the United Kingdom every other hour. As well as reporting on the weather, Moe and Arild radioed assessments of the damage ''Tirpitz'' had suffered in the air attacks prior to Operation Paravane. Local contacts helped the agents in spying on ''Tirpitz'' before and after the 15 September attack. By the time of the attack, Moe and Arild had established an
observation post An observation post (commonly abbreviated OP), temporary or fixed, is a position from which soldiers can watch enemy movements, to warn of approaching soldiers (such as in trench warfare), or to direct fire. In strict military terminology, an ...
overlooking ''Tirpitz''s anchorage in Kaafjord.


Preparations

The attack force was placed on alert to launch what had been designated Operation Paravane on 8 September. Good weather was vital for the operation, and the airmen waited at their home bases for the next two days as forecasts proved unfavourable. Meanwhile, the Air Ministry, No. 5 Group and British military liaison officers in the USSR continued to work with the relevant Soviet headquarters to finalise the arrangements for Force A's flight from Norway to Yagodnik. Subsequent forecasts indicated that weather conditions at Kaafjord were changing rapidly, and during the morning of 11 September Harris judged that it would not be feasible to launch the bombers from Scotland with confidence that Kaafjord would be free of cloud by the time they arrived. Accordingly, he decided to change the plans for the operation, with all of the bombers now flying to Yagodnik first and mounting the attack from that airfield. Harris ordered the attack force to depart that afternoon, before advising the Air Ministry or Soviets of the change in plans. Both British bomber squadrons began to take off at 5pm local time. No. 9 Squadron dispatched 18 Lancasters from RAF Bardney and 20 No. 617 Squadron Lancasters departed from
RAF Woodhall Spa Royal Air Force Woodhall Spa or more simply RAF Woodhall Spa is a former Royal Air Force station located north of Coningsby, Lincolnshire and southeast of Lincoln, Lincolnshire, England. History Constructed on farmland south of Woodhall ...
. A total of 26 Lancasters were armed with Tallboys and the remainder with JW mines. The Film Unit Lancaster also flew out of Bardney carrying three RAF cameramen as well as an
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journalist and a radio reporter from the
BBC #REDIRECT BBC #REDIRECT BBC Here i going to introduce about the best teacher of my life b BALAJI sir. He is the precious gift that I got befor 2yrs . How has helped and thought all the concept and made my success in the 10th board exam. ...
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. The Liberators departed Bardney just before the bombers, carrying McMullen, maintenance personnel and spare parts. The No. 540 Squadron Mosquito left Bardney the next day. Despite not being notified of the new plan until after all of the Lancasters were airborne, the Soviet military quickly agreed to the changed arrangements. The Lancasters' flight to Yagodnik initially went well. After departing their bases, the 39 aircraft flew north to Shetland before turning east. During the early stages of the flight one of the No. 9 Squadron Lancasters was forced to dump its Tallboy into the North Sea after it became decoupled from its mounting; the bomber returned to base. The remaining aircraft passed over neutral Sweden where the aircrew, most of whom had only conducted night flying over countries observing blackouts, were pleased to see towns lit up. After crossing the Gulf of Bothnia the Lancasters continued over Finland towards the USSR. Several aircraft were fired on by Swedish, Finnish and Soviet anti-aircraft defences, but only one suffered any damage. Despite pre-departure forecasts of good weather, the force encountered thick clouds after entering Finnish airspace; this continued for the remainder of the flight. The conditions made navigation difficult, and forced the pilots to fly at a low altitude so that they could use features on the ground to determine their location. Only 26 of the Lancasters were able to locate Yagodnik and land there during the morning of 12 September, the other 13 touching down at other airfields or crash landing in open spaces. Five or six of the latter aircraft were written off, and two of the seven which eventually reached Yagodnik were too badly damaged to be used in operations. Despite the number of crashes, none of the airmen on board these aircraft were injured. McMullen recorded that it was "extraordinary that so few crashes occurred" given the adverse circumstances, and that the majority of the aircraft dispatched could have been destroyed. After being concentrated at Yagodnik, the attack force was readied to strike Kaafjord. The Soviet personnel at the airfield provided considerable assistance, but the process of refuelling the aircraft could not be completed until 13 September due to inadequate facilities. The ground crew also repaired some of the damaged bombers, in some cases with parts salvaged from the aircraft which had been written off. The British officers and senior non-commissioned officers were accommodated in a boat, and all other personnel slept in overcrowded underground huts. Both the boat and the huts were infested with bed bugs, and almost all of the airmen were bitten before the accommodation was fumigated by the detachment's medical officer. By the morning of 14 September, 26 Lancasters from the attack forces and the Film Unit aircraft were ready; 20 of the bombers were armed with Tallboys and the remainder with JW mines. The Mosquito took off bound for Kaafjord at 2:10am, but the planned departure of the bombers at 8:00am was cancelled when it returned to Yagodnik at 6:45 and reported that conditions over the target area were unsuitable. For the remainder of the day the Soviets provided hospitality including a formal lunch, a football tournament and a film that night. Some of the Allied airmen were disturbed to see
political prisoner A political prisoner is someone imprisoned for their political activity. The political offense is not always the official reason for the prisoner's detention. There is no internationally recognized legal definition of the concept, although n ...
s being beaten by overseers while undertaking forced labour. Work on repairing the damaged Lancasters also continued on 14 September, and an additional Tallboy-armed aircraft was ready by the next morning. The plans for the raid were further adjusted while No. 9 and No. 617 Squadrons were waiting at Yagodnik. The Lancasters were to take off together, and fly at low altitude until they reached the border between Finland and the USSR to avoid detection by German radar stations located around Kirkenes. The Force A aircraft would then climb to around and the six Force B bombers to . Three Lancasters from No. 9 Squadron would proceed ahead of the main body to determine wind conditions over Kaafjord. When the main body reached a position around from the fjord, at which point the British expected that the Germans would have detected the bombers, the Lancasters would move into attack formations and commence their bombing run. It was decided that all of the aircraft should attack simultaneously, with Force A flying in four groups of five aircraft which would approach Kaafjord from the south and drop Tallboys from altitudes between and . Force B was to fly in two lines abreast, pass over the fjord from south-east to north-west, and release the JW mines from between and .


Attack

The No. 540 Squadron Mosquito reconnoitred Kaafjord again in the morning of 15 September, and at 7am Yagodnik time reported that conditions were suitable for an attack. The 27 bombers and the Film Unit Lancaster began taking off shortly afterwards. The aircraft flew in a loose formation and the journey to northern Norway went as planned, though six Lancasters were forced to abort and return to Yagodnik. Despite passing near several German bases, the British force was undetected and no German fighters were airborne over Kaafjord at the time of the attack. Kaafjord's defenders detected the Lancasters approximately ten minutes before they arrived, and the protective smokescreen was beginning to form when the attack commenced at 10:55am
GMT Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London, counted from midnight. At different times in the past, it has been calculated in different ways, including being calculated from noon; as a cons ...
. Only the first group of Lancasters, led by Tait, were able to aim their bombs at ''Tirpitz'' before she was obscured by smoke. It is believed that the bomb dropped from Tait's aircraft struck the battleship, and the other bombs dropped by this group landed in the water nearby. All the other Force A aircraft aimed their Tallboys at the anti-aircraft gunfire rising from the ship; 17 of the weapons were dropped. Several Lancasters made more than one pass over the target area as their bomb aimers sought to locate ''Tirpitz'' or technical problems prevented their Tallboy from being dropped on the initial pass. Force B commenced its attack after the Tallboy Lancasters had completed theirs so that the shock waves from bomb explosions did not prematurely set off the JW mines. As none of the Force B aircrew were able to spot ''Tirpitz'' due to the smokescreen, they dropped the mines on the battleship's estimated position. These weapons did not cause any damage. The smokescreen over Kaafjord prevented the Allied aircrew from being able to assess the results of their bombing, though several large spouts of water and explosions were observed. Tait was also pleased to see a column of black smoke rising through the smokescreen. Some of the bombs and mines landed up to a mile from the battleship. ''Tirpitz''s anti-aircraft guns and a further 98 guns located in nearby shore batteries and warships fired on the bombers throughout the attack, but only four Lancasters suffered any damage. All of the Lancasters had completed their attacks by 11:07am GMT, and the 21 bombers began the return journey to Yagodnik. The Force A aircraft which had not been able to bomb brought their Tallboys back. This flight proved uneventful, and all 27 Lancasters landed at Yagodnik in the evening. The Film Unit aircraft flew directly from Kaafjord to the United Kingdom, and arrived at its home station after a fifteen-and-a-half hour flight; this was the longest operational Lancaster mission of World War II. The Mosquito conducted a reconnaissance sortie over Kaafjord on the afternoon of 15 September, arriving at about 1:30pm GMT. Its crew found that the fjord was covered with cloud and smoke. They could briefly see ''Tirpitz'', and reported that no damage was evident to the battleship, which remained afloat. The Mosquito conducted further reconnaissance sorties on 16 September, but the fjord was completely obscured on all occasions. McMullen considered launching a second attack, but decided against doing so as only two Tallboys and one load of JW mines were available.


Aftermath

''Tirpitz'' was rendered unfit for combat by Operation Paravane. The Tallboy bomb that struck the battleship passed through the
foredeck The forecastle ( ; contracted as fo'c'sle or fo'c's'le) is the upper deck (ship), deck of a sailing ship forward of the foremast, or, historically, the forward part of a ship with the sailors' living quarters. Related to the latter meaning is the ...
and hull, and exploded in the water on the starboard side of her bow. This damage wrecked the bow, and left the battleship's forward compartments flooded with 2,000 tons of water. The explosions of several other Tallboys in the water near ''Tirpitz'' also buckled some of her hull plates and bulkheads. The battleship's casualties were not heavy, with five men killed and fifteen wounded. The damage was assessed as needing nine months' worth of work to repair. After reporting on the damage, ''Tirpitz''s commanding officer, ''Kapitän zur See'' Wolf Junge, recommended to the German Navy's high command that the battleship be removed from service. The attack force returned to the United Kingdom in several groups. Tait led 16 Lancasters out of Yagodnik in the evening of 16 September; most of these aircraft flew over southern Finland, Sweden and Denmark. One of the Lancasters went off course and crashed on a mountain near
Nesbyen Nesbyen is a town and the administrative center in Nesbyen municipality in the county of Viken, Norway. Nesbyen is located in the traditional district of Hallingdal. Summary Nesbyen has a population of about 3,500 inhabitants. It is located ...
in Norway, killing all eleven airmen aboard, the only Allied casualties of Operation Paravane. Nine other Lancasters departed on 17 September, followed by five the next day and two on 21 September. The remaining Lancasters had been judged to be damaged beyond repair, and were handed over to the Soviets. The Mosquito, which had been damaged by anti-aircraft fire during a sortie over Kaafjord, returned once repairs were complete on 26 September. The two Liberators were the final aircraft to depart, and flew out of Yagodnik carrying McMullen on 27 September. Following the attack, the British intelligence services sought to determine the extent of ''Tirpitz''s damage. During late September, Norwegian SIS agents in the Kaafjord area reported that the battleship had been struck by a bomb and appeared damaged. German radio signals that were intercepted and decoded on 25 and 29 September also stated that ''Tirpitz'' had suffered a single hit from a large bomb. Photographs taken by the No. 540 Squadron Mosquito and a Soviet aircraft on 20 September indicated that the bow of the ship was damaged, though it was not possible to determine how badly. Drawing on this evidence, the Royal Navy's Naval Intelligence Division concluded on 30 September that ''Tirpitz'' had "almost certainly" been struck by a Tallboy and may have been further damaged by near misses, and that the damage to the ship may have been "considerable" and rendered her unable to put to sea. A report from a Norwegian agent on 30 September was more specific, stating that ''Tirpitz'' had suffered a direct hit, which had opened a gash on her bow. Further agent reports in early October provided little new evidence. By late October, with no major German warships left in Kaafjord, the agents operating the "Aslaug" transmitter left the area, sending their last transmission to the United Kingdom on 22 October. Moe and Arild made their way on foot across the
Finnmarksvidda Finnmarksvidda ( sme, Finnmárkkoduottar; en, Finnmark plateau/highland) is Norway's largest plateau, with an area greater than . The plateau lies about above sea level. Approximately 36% of Finnmark lies on the Finnmarksvidda. Geography Fr ...
plateau to
Kautokeino Kautokeino ( no, Kautokeino; se, Guovdageaidnu ; fkv, Koutokeino; fi, Koutokeino) is a municipality in Troms og Finnmark county, Norway. The administrative centre of the municipality is the village of Guovdageaidnu/Kautokeino. Other village ...
and from there through Finland to
Karesuando Karesuando (; fi, Kaaresuvanto or ; Sami: , or ) is the northernmost locality in Sweden. It is situated in Kiruna Municipality, Norrbotten County, Sweden, with 303 inhabitants in 2010 and 350 in 2011. It is a church village, located alongside ...
in Sweden, arriving on 5 December. The agents carried out the march without resupplies of food, as Operation Carpetbagger had ceased using Soviet airbases after a Liberator was inadvertently shot down by a Soviet fighter during a follow-up operation to
Finnmark Finnmark (; se, Finnmárku ; fkv, Finmarku; fi, Ruija ; russian: Финнмарк) was a county in the northern part of Norway, and it is scheduled to become a county again in 2024. On 1 January 2020, Finnmark was merged with the neighbouri ...
shortly after the insertion of Moe and Arild. A meeting involving ''
Großadmiral Grand admiral is a historic naval rank, the highest rank in the several European navies that used it. It is best known for its use in Germany as . A comparable rank in modern navies is that of admiral of the fleet. Grand admirals in individual n ...
'' Karl Dönitz, the commander of the German Navy, was held in Berlin on 23 September to discuss the damage to ''Tirpitz''. Dönitz was informed that it would take nine months to repair the ship, and that all the work had to be done at Kaafjord as the battleship would be extremely vulnerable if she tried to sail to a major port. As Soviet forces were also rapidly advancing towards northern Norway, Dönitz judged that it was not feasible to either return the ship to ocean-going service or retain her at Kaafjord. Instead, he decided to use ''Tirpitz'' as a floating artillery battery to defend the town of
Tromsø Tromsø (, , ; se, Romsa ; fkv, Tromssa; sv, Tromsö) is a municipality in Troms og Finnmark county, Norway. The administrative centre of the municipality is the city of Tromsø. Tromsø lies in Northern Norway. The municipality is the ...
. Dönitz also expressed hope that retaining the ship in commission would "continue to tie down enemy forces and by her presence ... confound the enemies' intentions". The commander of the German Navy's task force in northern Norway, ''
Konteradmiral ''Konteradmiral'', abbreviated KAdm or KADM, is the second lowest naval flag officer rank in the German Navy. It is equivalent to ''Generalmajor'' in the '' Heer'' and ''Luftwaffe'' or to '' Admiralstabsarzt'' and '' Generalstabsarzt'' in the ' ...
'' Rudolf Peters, was accordingly directed to anchor ''Tirpitz'' at a location near Tromsø where the water was shallow enough to prevent the battleship from sinking completely if she suffered further damage. As the intelligence available to them was not conclusive, the Allies believed that ''Tirpitz'' still posed a potential threat. Accordingly, Nos. 9 and 617 Squadrons made two further attacks on the battleship after she moved to Tromsø on 15 October; these operations were more straightforward to conduct than Operation Paravane as the port was within the range of Lancasters flying from airfields in northern Scotland. The first raid, Operation Obviate, took place on 29 October but caused only minor damage to the battleship. During the subsequent attack conducted on 12 November,
Operation Catechism Operation Catechism was a British air raid of World War II that destroyed the German battleship ''Tirpitz''. It was conducted on 12 November 1944 by 29 Royal Air Force heavy bombers that attacked the battleship at its anchorage near the Norwegia ...
, ''Tirpitz'' was struck by several Tallboy bombs and
capsized Capsizing or keeling over occurs when a boat or ship is rolled on its side or further by wave action, instability or wind force beyond the angle of positive static stability or it is upside down in the water. The act of recovering a vessel fro ...
with heavy loss of life among her crew.


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* * * * * * * * * * * * * * * * * * * * * * * {{DEFAULTSORT:Paravane World War II aerial operations and battles of the Western European Theatre Soviet Union–United Kingdom relations Military operations of World War II involving Germany Aerial operations and battles of World War II involving the United Kingdom 1944 in Norway Alta, Norway Conflicts in 1944 September 1944 events